3 files changed, 32 insertions, 9 deletions

diff --git a/fs/xattr.c b/fs/xattr.c
index 3368659c471e..2d13b4e62fae 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -170,7 +170,7 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
                 const void *value, size_t size, int flags)
 {
         struct inode *inode = dentry->d_inode;
-        int error = -EOPNOTSUPP;
+        int error = -EAGAIN;
         int issec = !strncmp(name, XATTR_SECURITY_PREFIX,
                                    XATTR_SECURITY_PREFIX_LEN);
 
@@ -183,15 +183,21 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
                         security_inode_post_setxattr(dentry, name, value,
                                                      size, flags);
                 }
-        } else if (issec) {
-                const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
-
+        } else {
                 if (unlikely(is_bad_inode(inode)))
                         return -EIO;
-                error = security_inode_setsecurity(inode, suffix, value,
-                                                   size, flags);
-                if (!error)
-                        fsnotify_xattr(dentry);
+        }
+        if (error == -EAGAIN) {
+                error = -EOPNOTSUPP;
+
+                if (issec) {
+                        const char *suffix = name + XATTR_SECURITY_PREFIX_LEN;
+
+                        error = security_inode_setsecurity(inode, suffix, value,
+                                                           size, flags);
+                        if (!error)
+                                fsnotify_xattr(dentry);
+                }
         }
 
         return error;
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index f0c7f1481bae..f2bd21b93dfc 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -683,10 +683,11 @@ static void pipe_advance(struct iov_iter *i, size_t size)
         struct pipe_inode_info *pipe = i->pipe;
         struct pipe_buffer *buf;
         int idx = i->idx;
-        size_t off = i->iov_offset;
+        size_t off = i->iov_offset, orig_sz;
         
         if (unlikely(i->count < size))
                 size = i->count;
+        orig_sz = size;
 
         if (size) {
                 if (off) /* make it relative to the beginning of buffer */
@@ -713,6 +714,7 @@ static void pipe_advance(struct iov_iter *i, size_t size)
                         pipe->nrbufs--;
                 }
         }
+        i->count -= orig_sz;
 }
 
 void iov_iter_advance(struct iov_iter *i, size_t size)
diff --git a/net/socket.c b/net/socket.c
index 272518b087c8..73dc69f9681e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -341,8 +341,23 @@ static const struct xattr_handler sockfs_xattr_handler = {
         .get = sockfs_xattr_get,
 };
 
+static int sockfs_security_xattr_set(const struct xattr_handler *handler,
+                                     struct dentry *dentry, struct inode *inode,
+                                     const char *suffix, const void *value,
+                                     size_t size, int flags)
+{
+        /* Handled by LSM. */
+        return -EAGAIN;
+}
+
+static const struct xattr_handler sockfs_security_xattr_handler = {
+        .prefix = XATTR_SECURITY_PREFIX,
+        .set = sockfs_security_xattr_set,
+};
+
 static const struct xattr_handler *sockfs_xattr_handlers[] = {
         &sockfs_xattr_handler,
+        &sockfs_security_xattr_handler,
         NULL
 };